Improvement in telegraph-poles



3. LKGHAPMANf--Telegraph Foies. N.O. 142,082. PatentedAugus,t26,l873.

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. NITED STATES PATENT rrrcn.

JOSEPH L. CHAPMAN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWO-THIRDS HIS RIGHT TO JOHN C. STOGKTON AND JAMES WATSON,

OF SAME PLACE.

IMPROVEMENT IN TELEGRAPwH-POLES.

Speciiication forming part of Letters Patent No. 142.082, dated August 26, 1873 application tiled March 1, 1873.

To all whom it may concern:

Be it known that I, JOSEPH L. CHAPMAN, of the city and county of PhiladelphiaJ and State of Pennsylvania, have invented certain hanged feet for securing them to a suitablev base-plate, connected by tie-rods, and placed partially in a vertical and inclined position, and grouped together at the upper portion to receive the wooden cross-pieces which support the insulators and wires.

Figure l is an elevation of my invention, showing it properly erected. Fig. 2 isa perspective view'of the same, showing the exact form of the structure. Fig. 3 is a cross-section of the same.

The structure shown in the drawing consists of four bars or strips ot'rolled angle-iron, A, A1, A2, and A3,'placed in a vertical position, and or" suflicient length for embedding in the earth and to form the proper height for a telegraphpole. The lower ends of these bars are provided with feet or lugs, ,which are secured to a base-plate, B, of adequate area to form a broad and steady base. rlhe upper portion of the bars above the ground surface are inclined inward, and approach, on the line c b, Fig. 1,to within a short distance of each other, and from the line a b to the top they extend straight and parallel. The crossfbars G C C for supporting the wires are inserted between the bars A, A1, A2, and A3,#andsecured in place by means'of bolts D D D, as shown in the drawing. To increase the strength and stiffness ofthe structure, the bars A A1 A2 A3 are tied and braced by means of bolts E E, Ste., which are provided with shoulders and riveted to the sides of the bars. The said bolts, on one side of the structure, may be placed close together, so as to answer the purpose of a ladder for a person to ascend when the wires require adjustment. The lower portion of the structure is embedded in the ground, as'shown in Fig. 1, and the earth packed solidly in and around it. A casing, F, ot' wood or iron, is placed around it above the surface of the ground, which answers the purpose of a guard to prevent unauthorized persons ascending the structure. It' desired, this casing may be dispensed with, and a letter or lirealarm box substituted.

In ascending the structure, ashort ladder is used, which enables a person to pass the casing or obstruction F.

rods E E, and arranged at the upper portion t6 receive the cross-pieces G C C, substantially as herein shown and described.` JOSEPH L. CHAPMAN.

Witnesses;

Isaac R. OAKFORD, Isnxc ToWNsEND. 

